I guess you´re aware that 32-bit OSs cannot typically address more than 4GB of RAM.
Thus, on a 16GB RAM system, you´ll be much better by running a 64-bit host OS. As simple as that. PAE is just a trick, that allows a given process to get its own 4GB flat address space. http://en.wikipedia.org/wiki/Physical_Address_Extension ...in the same way XMS and EMS allowed programs to bypass the 640K DOS limitation ages ago... FC 2009/12/18 Solón Cáceres Moreno <so...@bogotanos.net>: > I have a proliant server ML350 G6 with 16 GB of RAM and Linux Ubutu 9.10 > (Karmic) 32-bit kernel with PAE. That's my host and I'm running virtualbox > 3.12. > > Virtualbox will not let me create virtual machines (guests) with more than > 2.5 GB of RAM. For example, I am creating a virtual machine Windows 2008 > Server Enterprise and I can assign up 2.5Gb of RAM which is very little to > the requirements of this operating system. > > The Virtualbox manual online says: "...the "Enable PAE/NX" setting > determines whether the PAE and NX capabilities of the host CPU will be > exposed to the virtual machine. PAE stands for "Physical Address Extension". > Normally, if enabled and supported by the operating system, then even a > 32-bit x86 CPU can access more than 4 GB of RAM. This is made possible by > adding another 4 bits to memory addresses, so that with 36 bits, up to 64 GB > can be addressed. Some operating systems (such as Ubuntu Server) require PAE > support from the CPU and cannot be run in a virtual machine without it". > > I have done all the processes recommended in the forums and the manuals and > the situation remains the same. I do not want to install 64-bit operating > systems because I think we still have missing drivers, among other things. > > What may be happening? > > Greetings from Colombia, > ____________________________________________ > Solón Cáceres Moreno > Systems Engineer > Personal Home Page: http://solca-ws.bogotanos.net/ > > > Spanish Version post: > Yo tengo un servidor proliant ml350 G6 con 16 GB de memoria RAM y Linux > Ubutu 9.10 (Karmic) de 32 bits y kernel con PAE . Ese es mi host y estoy > corriendo virtualbox 3.12. Virtualbox no me deja crear máquinas virtuales > (invitados) con más de 2.5 GB de RAM. Por ejemplo, estoy creando una máquina > virtual Windows 2008 server enterprise y puedo asignar máximo 2.5Gb de > memoria RAM lo cual es muy poco para los requerimientos de este sistema > operativo. > > El manual de Virtualbox en línea dice: "...the "Enable PAE/NX" setting > determines whether the PAE and NX capabilities of the host CPU will be > exposed to the virtual machine. PAE stands for "Physical Address Extension". > Normally, if enabled and supported by the operating system, then even a > 32-bit x86 CPU can access more than 4 GB of RAM. This is made possible by > adding another 4 bits to memory addresses, so that with 36 bits, up to 64 GB > can be addressed. Some operating systems (such as Ubuntu Server) require PAE > support from the CPU and cannot be run in a virtual machine without it". > > Yo he realizado todos los procesos que recomiendan en los foros y en los > manuales y la situación sigue igual. No quiero instalar sistemas operativos > de 64 bits porque pienso que aún les faltan drivers, entre otras cosas. > > Qué puede estar sucediendo? > > Saludos cordiales desde Colombia, > ____________________________________________ > Solón Cáceres Moreno > Ingeniero de Sistemas > Página Personal: http://solca-ws.bogotanos.net/ > > > _______________________________________________ > vbox-users mailing list > vbox-users@virtualbox.org > http://vbox.innotek.de/mailman/listinfo/vbox-users > > -- Dream of the Daily Mail It is the Holy Grail And then the BBC Your life would be complete -Manic Street Preachers, "Royal Correspondent" _______________________________________________ vbox-users mailing list vbox-users@virtualbox.org http://vbox.innotek.de/mailman/listinfo/vbox-users
